Fast response, laser based gas analyzer.
Tunable diode laser absorption spectroscopy (TDLAS) is a technique for measuring the concentration of certain species such as H2S, water vapor and many more, in a gaseous mixture using tunable diode lasers and laser absorption spectrometry.
The advantage of TDLAS over other techniques for concentration measurement is its ability to achieve very low detection limits.
Apart from concentration, it is also possible to determine the temperature, pressure, velocity and mass flux of the gas under observation.TDL is by far the most common laser based absorption technique for quantitative assessments of species in gas phase.
Working of the cell:
Fixed path length multi pass optical cell – Only the laser and detector will vary – Zero dead volume in the cell, enables fast response times – Optical cell is common to all analyser